AQUARION-RIDGEFIELD
Connecticut — Community Water System — PWSID: CT1180011
System Information
| PWSID | CT1180011 |
| System Name | AQUARION-RIDGEFIELD |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 01 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 8, 1979 |
| Last Reported | Mar 30, 2026 |
Location & Contact
| State | Connecticut |
| City | SHELTON |
| ZIP Code | 06484 |
| Address | 505 Huntington St. |
| Organization | ULRICH, ROBERT J. |
| Phone | 203-926-4320 |
Population & Service
| Population Served | 7,476 |
| Service Connections | 2,814 |
Drinking Water Violations (93)
This water system has 93 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dec 30, 2021 | — | MR | No | No | — | TT | — | Resolved | Jan 21, 2022 | — | |
| Jan 21, 2021 | — | Other | No | No | — | — | — | Resolved | May 3, 2021 | — | |
| Jan 21, 2021 | — | Other | No | No | — | — | — | Resolved | May 3, 2021 | — | |
| Sep 12, 2019 | — | MR | No | Yes | — | — | — | Resolved | Sep 5, 2019 | — | |
| Sep 12, 2019 | — | MR | No | Yes | — | — | — | Resolved | Sep 5, 2019 | — | |
| Sep 12, 2019 | — | MR | No | Yes | — | — | — | Resolved | Sep 5, 2019 | — | |
| Sep 12, 2019 | — | MR | No | Yes | — | — | — | Resolved | Sep 5, 2019 | — | |
| Jul 1, 2018 | — | Other | No | No | — | — | — | Resolved | Jul 9, 2018 | — | |
| Jul 1, 2018 | — | Other | No | No | — | — | — | Resolved | Jul 9, 2018 | — | |
| Jul 1, 2006 | — | Other | No | No | — | — | — | Resolved | Jul 13, 2006 | — | |
| Jul 1, 2006 | — | Other | No | No | — | — | — | Resolved | Jul 13, 2006 | — | |
| Jul 1, 1993 | — | MR | No | No | — | TT | — | Resolved | Oct 26, 1993 | — | |
| Jul 1, 1993 | — | MR | No | No | — | TT | — | Resolved | Oct 26, 1993 | — | |
| Jul 1, 1993 | — | MR | No | No | — | TT | — | Resolved | Oct 26, 1993 | — | |
| Jul 1, 1993 | — | MR | No | No | — | TT | — | Resolved | Oct 26, 1993 | — | |
| May 1, 1993 | May 31, 1993 | MR | No | No | — | 5% of samples | — | Resolved | May 31, 1993 | — | |
| May 1, 1993 | May 31, 1993 | MR | No | No | — | 5% of samples | — | Resolved | May 31, 1993 | — | |
| May 1, 1993 | May 31, 1993 | MR | No | No | — | 5% of samples | — | Resolved | May 31, 1993 | — | |
| May 1, 1993 | May 31, 1993 | MR | No | No | — | 5% of samples | — | Resolved | May 31, 1993 | — | |
| Jan 1, 1993 | Oct 26, 1993 | MR | No | No | — | TT | — | Archived | Oct 26, 1993 | — | |
| Jan 1, 1992 | Dec 31, 1994 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1992 | Dec 31, 1994 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1992 | — | TT | Yes | No | — | — | — | Resolved | May 23, 2001 | — | |
| Jan 1, 1992 | Dec 31, 1994 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1992 | Dec 31, 1994 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1992 | Dec 31, 1994 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1992 | Dec 31, 1994 | MR | No | Yes | — | 0.05 mg/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1992 | Dec 31, 1994 | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1992 | Dec 31, 1994 | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1992 | Dec 31, 1994 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1992 | Dec 31, 1994 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1992 | Dec 31, 1994 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1992 | Dec 31, 1994 | MR | No | Yes | — | 0.010 mg/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1992 | Dec 31, 1994 | MR | No | Yes | — | 0.004 mg/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1992 | — | TT | Yes | No | — | — | — | Resolved | May 23, 2001 | — | |
| Jan 1, 1992 | — | TT | Yes | No | — | — | — | Resolved | May 23, 2001 | — | |
| Jan 1, 1992 | — | TT | Yes | No | — | — | — | Resolved | May 23, 2001 | — | |
| Jan 1, 1992 | — | TT | Yes | No | — | — | — | Resolved | May 23, 2001 | — | |
| Jan 1, 1992 | May 23, 2001 | TT | Yes | No | — | — | — | Archived | May 23, 2001 | — | |
| Jan 1, 1992 | May 23, 2001 | TT | Yes | No | — | — | — | Archived | May 23, 2001 | — | |
| Jan 1, 1992 | Dec 31, 1994 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1992 | Dec 31, 1994 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1992 | Dec 31, 1994 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1992 | Dec 31, 1994 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1992 | Dec 31, 1994 | MR | No | Yes | — | — | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1992 | Dec 31, 1994 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1992 | Dec 31, 1994 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1992 | Dec 31, 1994 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1992 | Dec 31, 1994 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 1994 | — | |
| Jan 1, 1992 | Dec 31, 1994 | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 1994 | — |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.